A model of pulsed gamma-radiation from the X-ray binary Hercules X-1/HZ Herculis

Author(s):  
F. A. Aharonian ◽  
A. M. Atoyan
Keyword(s):  
2016 ◽  
Vol 5 (4) ◽  
pp. 308-317
Author(s):  
Hagos Tesfay ◽  
Erika S. Bronze-Uhle ◽  
Augusto Batagin-Neto ◽  
Anna C. Véron ◽  
Thomas Geiger ◽  
...  
Keyword(s):  

2005 ◽  
Vol 480-481 ◽  
pp. 13-20 ◽  
Author(s):  
Khalil Arshak ◽  
Olga Korostynska ◽  
John Henry

This paper reports on the gamma radiation-induced changes in thin oxide films deposited by thermal vacuum technique. Structures of various oxides thin films, such as In2O3, SiO and TeO2 and their mixtures in different proportions were studied. The influence of gamma radiation on In2O3/SiO films has resulted in significant changes in the microstructure of this film. Some kind of agglomerations with variable sizes in the range 0.5-3 µm has occurred. After a dose of 8160 µSv an evidence of partial crystallisation was observed with X-ray diffraction. Structural changes in TeO2 thin film were explored by means of Raman spectroscopy. After they have been exposed to g- radiation, a strong peak appeared at 448.83 cm-1, indicating further transformation to g-TeO2 modification.


2006 ◽  
Vol 40 (6) ◽  
pp. 687-690 ◽  
Author(s):  
A. V. Bobyl ◽  
A. A. Gutkin ◽  
P. N. Brunkov ◽  
I. A. Zamoryanskaya ◽  
M. A. Yagovkina ◽  
...  

2016 ◽  
Vol 671 ◽  
pp. 012051 ◽  
Author(s):  
S G Stuchebrov ◽  
I A Miloichikova ◽  
X O Shilova

2012 ◽  
Vol 195-196 ◽  
pp. 369-376 ◽  
Author(s):  
Inmaculada Velo-Gala ◽  
Jesús J. López-Peñalver ◽  
Manuel Sánchez-Polo ◽  
José Rivera-Utrilla

2018 ◽  
Vol 69 (01) ◽  
pp. 44-49
Author(s):  
ÖZDEMIR HAKAN ◽  
CAMGÖZ BERKAY

Lead aprons that are lead-shielding products are generally used for personal protection of physicians and patients from X-ray (gamma) radiation during medical operations; lead has environmental disadvantages, with high toxicity, though. Therefore, the aim of this research was to produce an environmentally friendly and flexible textile-based radiation shielding material. In this work, 2/2 twill, 3/1 twill, Herringbone, Whipcord, which are twill derivatives, Barathea and Crêpe woven fabrics, which are sateen derivatives, woven with textured steel yarns, which have soft feeling and flexibility, and gamma radiation shielding effectiveness of these fabrics were investigated and were not studied in the references. The effects of fabric structural characteristics such as weave, conductive weft yarn density, fabric thickness and porosity on these properties were analysed graphically and statistically. It is observed that with the biggest thicknesses and lowest porosities, Barathea and Crêpe woven fabrics performed better gamma radiation shielding performance than other woven fabrics. The samples F1 and E1, woven with Barathea and Crêpe weave, have the highest gamma radiation shielding effectiveness, thanks to the highest fabric thicknesses and lowest porosities. In addition, the increases of textured steel yarn density improved the gamma radiation shielding effectiveness of woven fabrics.


Author(s):  
Grzegorz Domański ◽  
Roman Szabatin ◽  
Piotr Brzeski ◽  
Bogumił Konarzewski

The article presents the developed structure of the novel needle proportional gas detector (NPC – Needle Proportional Counter) used for the detection of X-rays and gamma rays. The advantage of the detector is its simple mechanical construction and the possibility of detection of incident radiation in a direction parallel to the needle. The measured energy spectrum of the isotope Fe-55 by means of the developed detector is presented.


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